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Colorant

AMMONIUM XANTHOMMATIN

CAS 521-58-4 (free base) Updated
55

Safety score · 0–100

Moderate

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

About

Ammonium xanthommatin — an ommochrome pigment (the natural color in some butterfly wings and squid ink) used as a niche cosmetic colorant. Limited regulatory coverage; we default to caution.

Function

ANTIOXIDANT

Skin benefits

  • Naturally derived ommochrome pigment (insect/cephalopod origin)
  • Provides yellow-orange color
  • Antioxidant tryptophan-derived structure

Known concerns

  • Limited cosmetic-specific safety review
  • Color stability and possible reactive ortho-aminophenol intermediates
  • Not on EU CosIng approved colorants list under this name
  • Default-down for a novel pigment

References

EU

EU CosIng database

European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.

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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.